diff --git a/code/modules/atmospherics/machinery/components/components_base.dm b/code/modules/atmospherics/machinery/components/components_base.dm
index 59e05013d46..691c95ba87e 100644
--- a/code/modules/atmospherics/machinery/components/components_base.dm
+++ b/code/modules/atmospherics/machinery/components/components_base.dm
@@ -268,7 +268,6 @@
 	atmos_init()
 	for(var/i in 1 to device_type)
 		var/obj/machinery/atmospherics/node = nodes[i]
-		node = nodes[1]
 		if(node)
 			node.atmos_init()
 			node.add_member(src)
diff --git a/code/modules/research/ordnance/tank_compressor.dm b/code/modules/research/ordnance/tank_compressor.dm
index f6596fb5081..dadf5616909 100644
--- a/code/modules/research/ordnance/tank_compressor.dm
+++ b/code/modules/research/ordnance/tank_compressor.dm
@@ -80,6 +80,16 @@
 		return FALSE
 	return TRUE
 
+/obj/machinery/atmospherics/components/binary/tank_compressor/default_change_direction_wrench(mob/user, obj/item/I)
+	if(!..())
+		return FALSE
+	set_init_directions()
+	update_appearance()
+	return TRUE
+
+/obj/machinery/atmospherics/components/binary/circulator/get_node_connects()
+	return list(turn(dir, 180), dir) // airs[2] is input which is facing dir, airs[1] is output which is facing the other side of dir
+
 /obj/machinery/atmospherics/components/binary/tank_compressor/screwdriver_act(mob/living/user, obj/item/tool)
 	if(active || inserted_tank)
 		return FALSE